Coding Test A to Z by a World Finalist (with Python)

Hello.

We have completed the supplementary work on the lecture materials in preparation for the potential shutdown of the Baekjoon service.

We have added a Lecture Problem Archive so that you can review the problems covered in the course, and we have reorganized and supplemented the problem descriptions and example inputs/outputs to align with the flow of the lectures.

In addition, all links in the existing lecture materials that previously pointed to Baekjoon problem pages have been replaced with Lecture Problem Archive links. Therefore, if you click on a problem link in the lecture materials as before, you can check the content on the newly organized problem page.

This material is not a direct copy of the original problems, but rather supplementary learning material designed to help students study and review concepts.

For your information, Baekjoon has announced that some services will be resumed in a format that allows for future problem viewing. However, since it may be difficult to continue using the same grading environment as before, we recommend that you proceed with your lectures and review based on the lecture problem archive linked in the course materials.

Thank you.

Hello.

We would like to provide guidance on how to take the course in light of the recent news regarding the closure of the Baekjoon service.

The existing lectures are structured to utilize the Baekjoon website for reviewing problem descriptions and using the code grading functionality. Accordingly, to ensure no disruption to your learning after the service ends, we plan to carry out sequential supplementary work for the problems covered in the lectures by April 28, 2026, the scheduled termination date of the Baekjoon service.

The supplementary work will proceed as follows.

1. Creation of Problem Description Materials
We plan to create and provide explanatory materials for each problem covered in the lecture to help you understand them. This will ensure that you can follow the lecture content even in situations where accessing the Baekjoon site is difficult.

2. Creation and Provision of Test Cases
While it is difficult to provide the exact same grading environment as Baekjoon, we plan to create and provide test cases so that you can verify the solutions for each problem. We will prepare these so that students can continue their studies by checking their own solutions.

Additional details will be announced and provided through updates to the lecture materials as soon as they are finalized.

Thank you.